2A672 Vol 2 Pre-test

Interstage seals are the component on an A/M32A-95 gas turbine compressor that isolates the second stage air from the operation of the first stage compressor. These seals are designed to prevent air leakage between the stages, ensuring that the air from the first stage does not mix with the air from the second stage. By maintaining this separation, the efficiency and performance of the compressor are optimized.

The A/M32A-95 gas turbine compressor requires the exhaust door to be open and secured in order to start. If this step is skipped, the exhaust gases will not be able to escape properly, preventing the compressor from starting.

The correct answer is "Hydraulically." The nitrogen booster compressor on the self-generating nitrogen servicing cart (SGNSC) operates using hydraulic power. This means that it uses fluid pressure to generate the necessary force to compress the nitrogen. This method is commonly used in industrial applications where high pressure is required, as hydraulic systems can provide significant force and control.

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The correct answer states that there is no need to do anything because this is considered normal operation. The blower clutch will only engage at the governed speed, which means that it will not engage until the engine reaches a certain RPM. Therefore, there is no issue with the blower clutch not engaging at 1250 RPM.

Inward leaks occur in a refrigeration system when the pressure within the system is less than atmospheric pressure. This means that air or other substances from the outside are being drawn into the system, causing a leak.

When it is determined that the E and F pin voltage is not needed for the aircraft during operation of the EPU-6/E frequency converter, the operator should place the loop/bypass/28V to aircraft switch to the "Bypass" position. This means that the voltage will bypass the E and F pins and not be used for the aircraft.

The deswirl ring on an A/M32A-95 gas turbine compressor is responsible for smoothing turbulent air flow. Turbulent air flow can disrupt the efficiency and performance of the compressor, so the deswirl ring is designed to minimize turbulence and create a more streamlined and consistent flow of air. This helps to optimize the compressor's operation and ensure smooth and efficient airflow through the system.

Frosting of a refrigeration system line or component indicates a blockage. When there is a blockage in the system, the refrigerant flow is restricted, causing the temperature of the line or component to drop. This drop in temperature leads to the formation of frost on the surface. Therefore, the presence of frosting indicates that there is a blockage in the refrigeration system.

Before using the EPU-6/E frequency converter, it is important to inspect the air inlets for blockage. This is necessary to ensure proper airflow and prevent overheating of the components. Blockage in the air inlets can restrict the flow of air, leading to inadequate cooling and potential damage to the converter. Therefore, inspecting the air inlets for blockage is crucial for the safe and efficient operation of the EPU-6/E frequency converter.

The torus assembly is the component of the A/M32A-95 gas turbine compressor engine that accelerates hot expanding gases and directs them into the nozzle ring.

ASM1 and ASM2 are the components on the self-generating nitrogen servicing cart (SGNSC) that separate the nitrogen from the oxygen.

After an aerospace ground equipment (AGE) unit is overhauled, it is considered to be 2 years old at the completion of the overhaul. This suggests that the overhaul process takes a significant amount of time, approximately 2 years, to complete.

When the butterfly valve is closed on an A/M32A-95 gas turbine compressor, chambers 1, 3, and 4 are pressurized.

The oil pressure switch on the A/M32A-95 gas turbine compressor closes to complete the electrical circuit to the fuel solenoid and ignition unit. This means that when the oil pressure reaches a certain level, the switch will close, allowing the circuit to be completed and the fuel solenoid and ignition unit to be activated. This switch is an important safety feature as it ensures that the fuel is only ignited when there is sufficient oil pressure, preventing any potential accidents or damage to the turbine.

The auxiliary air system on the self-generating nitrogen servicing cart (SGNSC) provides low pressure air for pneumatic tools. This means that it supplies air at a lower pressure for the operation of tools that are powered by compressed air. This function is important for tasks that require the use of pneumatic tools, such as maintenance and repair work on aircraft or other equipment.

The correct answer is the Programmable Logic Controller (PLC) circuit. The PLC circuit is responsible for controlling and regulating the speed of the nitrogen booster compressor on the self-generating nitrogen servicing cart (SGNSC). It receives input signals from various sensors and devices, such as pressure sensors and flow meters, and based on the programmed logic, it adjusts the speed of the compressor to maintain the desired nitrogen pressure and flow rate. This ensures the efficient and effective operation of the nitrogen booster compressor.

The input and output terminals of the EPU-6/E need to be inspected at least twice a year, which is considered as semiannually. This ensures that any potential issues or faults with the terminals can be identified and addressed in a timely manner. Regular inspections help to maintain the proper functioning of the EPU-6/E and prevent any potential damage or malfunctioning.

A loose push-on connector on the output filter capacitor could cause one phase voltage to be lower than the other two phases. This is because a loose connection can result in poor contact and increased resistance, leading to a drop in voltage.

The acceleration limiter valve on the A/M32A-95 gas turbine compressor uses spring tension to control fuel flow to the atomizer. This means that the valve is designed in such a way that the tension of the spring determines the amount of fuel that is allowed to flow. When the control air pressure combined with spring tension is at a certain level, the poppet valve opens and allows fuel to flow to the atomizer. Therefore, the correct answer is spring tension.

The turbine start switch is the switch on the A/M32A-95 gas turbine compressor that starts the automatic starting cycle. This switch is specifically designed to initiate the starting sequence of the turbine, allowing it to begin its operation. The other switches mentioned, such as the air load switch, inhibit switch, and master switch, do not have the same function of starting the automatic starting cycle.

The heat sink on the MA-3D cools the ethylene glycol/water solution.

The probable cause of the trouble is that the override switch is not closed. This means that the switch is not in the correct position to allow the engine to operate when the MA-3D air conditioner SW1 is in the START position.

The correct answer is the analog board has failed. This is because an under voltage fault indicates that the voltage being supplied to the unit is lower than the required level. The analog board is responsible for monitoring and regulating the voltage, so if it fails, it can result in an under voltage fault.

The oil pressure switch is responsible for preventing engine operation of an A/M32A-95 gas turbine compressor if the oil pressure is low. This switch acts as a safety mechanism to ensure that the engine does not operate without sufficient oil pressure, which is necessary for proper lubrication and functioning of the engine. If the oil pressure is low, the switch will not allow the engine to start or continue running, preventing potential damage to the engine.

Item management and the equipment specialist determine the length of time it is considered economically feasible to repair a piece of equipment. They are responsible for assessing the condition of the equipment and evaluating the cost and benefits of repairing it versus replacing it. They consider factors such as the cost of repairs, the expected lifespan of the equipment after repairs, and the availability of replacement parts. Based on their analysis, they make a decision on whether it is more cost-effective to repair or replace the equipment.

The oil tank vent line prevents overpressurization of the bearing cavity on an A/M32A-95 gas turbine compressor. This is because the vent line allows excess pressure to be released from the bearing cavity, preventing any potential damage or failure due to overpressurization.

The correct answer is B7 which steps open to meter refrigerant into the evaporator. When the output air temperature of the air conditioner is too high, setting the temperature control to maximum cooling is necessary. In order to achieve this, the temperature controller sends a signal to B7, which then opens to meter refrigerant into the evaporator. This allows for more cooling capacity and helps to lower the output air temperature.

The blower on an MA-3D air conditioner increases the ambient air temperature approximately 60 degrees Fahrenheit. This is because the blower is responsible for circulating the air through the system, allowing it to come into contact with the heating elements and increasing its temperature.

The correct answer is Alternator output. The starter solenoid on the self-generating nitrogen servicing cart (SGNSC) disengages during normal operation when the alternator output is detected. This means that once the alternator is generating enough power, the starter solenoid is no longer needed and can disengage.

The maintenance organization submits the Air Force Technical Order (AFTO) Form 375 to the MAJCOM HQ.

The components that receive potential directly from the input auto transformer are the SCR voltage regulator and the phase sequence transformer.

During an operational check of an A/M32A-95 gas turbine compressor, when the air load switch S2 is placed in the ON position and the butterfly valve starts to open at 95 percent, you would check TD2.

The probable cause of the engine cranking but not starting is that the SV1 coil is open. This means that there is an issue with the coil, causing it to not function properly. As a result, the necessary electrical current is not being supplied to start the engine.

The probable cause of the trouble is that K3 is de-energized and its contacts did not remain closed. This means that the circuit responsible for charging the battery is not functioning properly, resulting in the battery not charging even though the A/M32A-95 is running.

The correct answer is suction pressure is too low so the boiling point of the refrigerant must be increased to increase the output air temperature. When the suction pressure is too low, it means that there is not enough refrigerant entering the compressor. This causes the boiling point of the refrigerant to decrease, resulting in a lower output air temperature. By increasing the boiling point of the refrigerant, the air conditioner can increase the output air temperature and improve its cooling efficiency.

The component on the MA-3D air conditioner that provides 24 volts alternating current (VAC) for operation of the temperature controller is the transformer rectifier (TR1).

The correct answer is Air load switch. The Air load switch on an A/M32A-95 gas turbine compressor energizes SV4.